[1]刘国清,金 懿,吕延文,等.Ce4+掺杂ZnO纳米材料的制备 及其光催化性能研究[J].南京师范大学学报(自然科学版),2019,42(02):93-98.[doi:10.3969/j.issn.1001-4616.2019.02.015]
 Liu Guoqing,Jin Yi,L Yanwen,et al.Preparation and Photocatalytic Properties of Ce4+-doped ZnO Nano Materials[J].Journal of Nanjing Normal University(Natural Science Edition),2019,42(02):93-98.[doi:10.3969/j.issn.1001-4616.2019.02.015]
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Ce4+掺杂ZnO纳米材料的制备 及其光催化性能研究
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《南京师范大学学报》(自然科学版)[ISSN:1001-4616/CN:32-1239/N]

卷:
第42卷
期数:
2019年02期
页码:
93-98
栏目:
·化学·
出版日期:
2019-06-30

文章信息/Info

Title:
Preparation and Photocatalytic Properties of Ce4+-doped ZnO Nano Materials
文章编号:
1001-4616(2019)02-0093-06
作者:
刘国清金 懿吕延文洪辉泉李贞攸
衢州学院化学与材料工程学院,浙江 衢州 324000
Author(s):
Liu GuoqingJin YiLü YanwenHong HuiquanLi Zhenyou
College of Chemical and Material Engineering,Quzhou University,Quzhou 324000,China
关键词:
Ce掺杂ZnO光催化罗丹明B
Keywords:
Ce-dopingZnOphotocatalysisRhB
分类号:
O643
DOI:
10.3969/j.issn.1001-4616.2019.02.015
文献标志码:
A
摘要:
采用水热法通过构建具有MOFs结构的Ce4+掺杂沸石咪唑酯骨架材料ZIF-8前驱体,再高温热解制备了Ce/ZnO光催化纳米材料,利用X射线衍射(XRD)、扫描电镜(SEM)和能谱(EDS)、比表面积测定(BET)对样品结构进行表征. 以罗丹明B(RhB)染料为目标降解物,考察了不同的Ce掺杂量及煅烧温度对Ce/ZnO的结构形貌和光催化性能的影响. 实验结果表明,适量Ce掺杂后,Ce/ZnO粒径均一性与分散性更好,且颗粒更小,比表面积增大,可显著提高其光催化活性和光催化稳定性,煅烧温度过高会出现烧结现象促使光催化性能降低. Ce掺杂量为2%(质量分数),煅烧温度为600 ℃条件下制得的Ce/ZnO光催化性能最佳,对RhB光照降解1 h后降解率超过99%,4次循环催化后降解率仍达97.89%.
Abstract:
Ce/ZnO photocatalytic nanomaterials were prepared by constructing Ce4+-doped zeolite imidazolate skeleton materials ZIF-8 with MOFs structure through hydrothermal method and then high-temperature pyrolysis. The structures of the obtained samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),energy disperse spectroscopy(EDS)and specific surface area determination(BET). Using RhB dye as the degradation object,the effects of Ce-doping amounts and calcining temperature on the structure morphology and photocatalytic performance of Ce/ZnO was investigated. The experimental results showed that the photocatalytic activity and stability of Ce/ZnO with uniform particle size and better dispersion,smaller particle size and bigger specific surface area,was improved significantly after Ce-doping while too high calcination temperature could cause the photocatalytic performance to be reduced. When the Ce-doping amount is 2%wt and calcination temperature is 600 ℃,the Ce/ZnO with best photocatalytic performance can degrade RhB more than 99% through 1 h lighting and the degradation rate is still up to 97.89% after four cyclic catalysis.

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备注/Memo

备注/Memo:
收稿日期:2018-09-11.
基金项目:国家自然科学基金(21476128).
通讯联系人:刘国清,工程师,研究方向:纳米半导体光催化材料和“三废”的综合处理研究. E-mail:582873911@qq.com
更新日期/Last Update: 2019-06-30